DE69226256T2 - Verfahren zur messung der verschiebungsquantität - Google Patents
Verfahren zur messung der verschiebungsquantitätInfo
- Publication number
- DE69226256T2 DE69226256T2 DE69226256T DE69226256T DE69226256T2 DE 69226256 T2 DE69226256 T2 DE 69226256T2 DE 69226256 T DE69226256 T DE 69226256T DE 69226256 T DE69226256 T DE 69226256T DE 69226256 T2 DE69226256 T2 DE 69226256T2
- Authority
- DE
- Germany
- Prior art keywords
- grooves
- center line
- deviation
- wobble pits
- measuring
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
- 238000000034 method Methods 0.000 title claims description 13
- 230000003287 optical effect Effects 0.000 claims description 20
- 239000000758 substrate Substances 0.000 description 11
- 238000004519 manufacturing process Methods 0.000 description 6
- 238000005259 measurement Methods 0.000 description 6
- 239000006187 pill Substances 0.000 description 6
- 238000005520 cutting process Methods 0.000 description 3
- 238000003825 pressing Methods 0.000 description 3
- 238000009658 destructive testing Methods 0.000 description 2
- 238000011156 evaluation Methods 0.000 description 2
- 230000010287 polarization Effects 0.000 description 2
- 230000002159 abnormal effect Effects 0.000 description 1
- 238000004364 calculation method Methods 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 238000005070 sampling Methods 0.000 description 1
Classifications
-
- G—PHYSICS
- G11—INFORMATION STORAGE
- G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
- G11B7/00—Recording or reproducing by optical means, e.g. recording using a thermal beam of optical radiation by modifying optical properties or the physical structure, reproducing using an optical beam at lower power by sensing optical properties; Record carriers therefor
- G11B7/24—Record carriers characterised by shape, structure or physical properties, or by the selection of the material
- G11B7/26—Apparatus or processes specially adapted for the manufacture of record carriers
-
- G—PHYSICS
- G11—INFORMATION STORAGE
- G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
- G11B7/00—Recording or reproducing by optical means, e.g. recording using a thermal beam of optical radiation by modifying optical properties or the physical structure, reproducing using an optical beam at lower power by sensing optical properties; Record carriers therefor
- G11B7/08—Disposition or mounting of heads or light sources relatively to record carriers
- G11B7/09—Disposition or mounting of heads or light sources relatively to record carriers with provision for moving the light beam or focus plane for the purpose of maintaining alignment of the light beam relative to the record carrier during transducing operation, e.g. to compensate for surface irregularities of the latter or for track following
- G11B7/0938—Disposition or mounting of heads or light sources relatively to record carriers with provision for moving the light beam or focus plane for the purpose of maintaining alignment of the light beam relative to the record carrier during transducing operation, e.g. to compensate for surface irregularities of the latter or for track following servo format, e.g. guide tracks, pilot signals
Landscapes
- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Optical Recording Or Reproduction (AREA)
- Manufacturing Optical Record Carriers (AREA)
- Photometry And Measurement Of Optical Pulse Characteristics (AREA)
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP3311522A JPH05128594A (ja) | 1991-10-31 | 1991-10-31 | 変位量測定方法 |
| PCT/JP1992/001412 WO1993009536A1 (en) | 1991-10-31 | 1992-10-30 | Method for measuring quantity of displacement |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| DE69226256D1 DE69226256D1 (de) | 1998-08-20 |
| DE69226256T2 true DE69226256T2 (de) | 1998-11-19 |
Family
ID=18018254
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| DE69226256T Expired - Fee Related DE69226256T2 (de) | 1991-10-31 | 1992-10-30 | Verfahren zur messung der verschiebungsquantität |
Country Status (5)
| Country | Link |
|---|---|
| US (1) | US5715223A (enrdf_load_stackoverflow) |
| EP (1) | EP0565731B1 (enrdf_load_stackoverflow) |
| JP (1) | JPH05128594A (enrdf_load_stackoverflow) |
| DE (1) | DE69226256T2 (enrdf_load_stackoverflow) |
| WO (1) | WO1993009536A1 (enrdf_load_stackoverflow) |
Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5238469A (en) * | 1992-04-02 | 1993-08-24 | Saes Pure Gas, Inc. | Method and apparatus for removing residual hydrogen from a purified gas |
| JP3413680B2 (ja) * | 1994-06-02 | 2003-06-03 | ソニー株式会社 | 追記型光ディスク装置及び追記型光ディスクの領域境界検索方法 |
| US5809006A (en) * | 1996-05-31 | 1998-09-15 | Cagent Technologies, Inc. | Optical disk with copy protection, and apparatus and method for recording and reproducing same |
| GB2341607B (en) | 1998-09-15 | 2000-07-19 | Morgan Crucible Co | Bonded fibrous materials |
| JP4476225B2 (ja) * | 2006-02-21 | 2010-06-09 | パナソニック株式会社 | 光ディスク装置、トラッキング制御方法、及び集積回路 |
| CN104030259A (zh) * | 2014-06-06 | 2014-09-10 | 上海大学 | 一种净化高纯氩气的装置 |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4748609A (en) * | 1985-03-29 | 1988-05-31 | Hitachi, Ltd. | Method and apparatus for composite tracking servo system with track offset correction and rotary optical disc having at least one correction mark for correcting track offset |
| NL193159C (nl) * | 1985-06-19 | 1998-12-04 | Hitachi Ltd | Voorgevormde registratiedrager voor het daarin met behulp van een lichtvlek schrijven van informatie. |
| JPH0721879B2 (ja) * | 1987-11-07 | 1995-03-08 | 株式会社日立製作所 | 光ディスク用レプリカ基盤，スタンパまたは原盤 |
| ATE126919T1 (de) * | 1989-12-04 | 1995-09-15 | Thomson Brandt Gmbh | Spursteuersystem für eine optische aufnahme- und abtasteinheit. |
-
1991
- 1991-10-31 JP JP3311522A patent/JPH05128594A/ja active Pending
-
1992
- 1992-10-30 DE DE69226256T patent/DE69226256T2/de not_active Expired - Fee Related
- 1992-10-30 WO PCT/JP1992/001412 patent/WO1993009536A1/ja active IP Right Grant
- 1992-10-30 US US08/078,184 patent/US5715223A/en not_active Expired - Fee Related
- 1992-10-30 EP EP92922199A patent/EP0565731B1/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| EP0565731A1 (en) | 1993-10-20 |
| WO1993009536A1 (en) | 1993-05-13 |
| EP0565731A4 (enrdf_load_stackoverflow) | 1994-03-23 |
| US5715223A (en) | 1998-02-03 |
| JPH05128594A (ja) | 1993-05-25 |
| DE69226256D1 (de) | 1998-08-20 |
| EP0565731B1 (en) | 1998-07-15 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| 8364 | No opposition during term of opposition | ||
| 8339 | Ceased/non-payment of the annual fee |